What causes Lenovo laptop to shut down automatically?

After booting up, press F8 to enter safe mode, and then exit, select Restart or Shut Down to boot on, you can enter normal mode (repair registry). If the fault persists, please use the system restore that comes with the system to restore the repair to the time when you did not have this fault (if the normal mode recovery fails, please boot the computer and press F8 to enter the safe mode and use the system restore).

The laptop automatically shuts down, generally due to the following reasons:

1 The computer system is poisoned or infected with malware.

2 CPU Fan Bad CPU Temperature Too High, Overheating Protection.

3 The power supply is bad, or new hardware has been added, and the power supply is insufficient.

4 The graphics card or graphics card fan is broken.

5 The motherboard is broken, and the motherboard core is overheating.

Solution: 1 Check whether the antivirus software has killed the virus, you can determine whether it is caused by the computer system poisoning or malware, if there is a virus, it is recommended to use a combination of antivirus software to kill the virus, or if it doesn't work, go to the maintenance center to solve it.

2 Test the temperature of each hardware on the computer, open the case, see if the CPU fan and graphics card fan rotate normally, find out the problem, and go to the maintenance center to replace the CPU fan. Different computer models have different CPUs**, which need to be detected to know**.

3 If the computer has a discrete graphics card and the power supply is not enough, you can only go to the repair center to change to a higher power power supply.

4 Shut down, touch the south bridge, north bridge chip, graphics card chip of the motherboard with your hands, if it is very hot, it is likely that the motherboard is damaged and needs to be repaired immediately.

The laptop always shuts down automatically due to a virus infection in the computer, which can be solved by using a security software antivirus:

1. First of all, open the 360 Security Guard antivirus software on your laptop and enter the main interface

2. Then, click on the Trojan Kill option in the tab above the software

3. Then select the area you need to scan

4. After that, 360 Security Guard will automatically start scanning

5. After scanning and removing the virus in the computer, the software will appear a completion window, click Finish, after cleaning the virus, the computer will not always restart

There are many reasons for the automatic shutdown of the computer, how long does it take for the computer to turn on and the automatic shutdown appears? How long have you been buying a computer? Generally, the automatic shutdown of the notebook may be due to poor heat dissipation, more than 1 year, Kenneng is because there is dust, remove the dust, and then there is the problem of the CPU fan, confirm whether the fan does not rotate or the CPU silica gel is gone, which will cause the computer temperature to be too high, and the phenomenon of automatic shutdown will occur.

It is estimated that the CPU is overheated due to the CPU fan not turning, you listen to whether the CPU fan is turning.

If the CPU is overheated, or it's time to clean up the dust, it is recommended to clean the dust and add a heat sink.

1. The temperature is too high.

2. Memory incompatibility.